How many words does the average adult know? How many words do millions of adults all together know? More than 70,000 people have already taken part in a study that is examining that and many other concepts relating to word association. Gerrit Storms and Simon Dedeyne from the Catholic University of Leuven in Belgium are the two people overseeing this study, and personally.. I want to know what happens to my word associations one I submit them to the massive database. Don't you?